Laminated glass



M. W. GLEASON.

LAMINATED GLASS. APPLICATION FILED JUNE 10. m9.

Patented June 1, 1920..

CLE/IR 5L UE OPHL JIVVENTOR By Arm/m WIT/158858 PATENT 'f-o FIcE.

MARSHALL GLE'ASON, OF BROOKLYN, NEW YORK, ASSIGNOR IO GLEASON TIEBOUT GLASS 00., on NEW YORK, 1v. Y.,

A CORPORATION or NEW YORK.

LAMINATED GLAss.

Specification of Letters Patent. 1 Patented June 1, 192() Application filed; Jill 1e 10,1919. Serial No. 303,182.

To all whom it ma concern.

Be it known that I, MARSHALL WV. GLEA- soN, a citizen of the United States, and a resident of th'e'city of New York, borough of'Brooklynyin the county of" Kings and State of- New York, have invented a new and Improved Laminated Glass, of which the following is a full,- clear, and exact description.

This invention relates to plastic ,or v1treous matter and has particular reference to the method or means for. making such compositions of matter in lammated form having among other things the following characteristics and structural advantages; first, the construct on of vitreous ObJQCtS such. as globes for electric lamps or the like inwhich there are provideda plurality of layers orlaminae of any suitable or varying tints or colors and with the different laminae so assembled or united that each of the lamina loses. its individual color or same or greater thickness, and thirdly, the.

provision of a glass-globe or reflector, having on its nner surface a thm tinted layer which has the function of filtering out from the light certain tints or colors so as to'pr oduce a light very similar to natural daylight.

VVith the foregoing and other objects 1n view my invention comprises features of construction hereinafter more specifically described and illustrated in the accompanying drawings, of which' Figure 1- is a side elevation of a lamp globe made in accordance with this inven .tion and illustrating one of its many uses.

- Fig.2 is an enlarged sectional view illus trating "the'laminated form of this structure; and

.Fig. 3 is a fragmentary inside View of the same, certain portions of the laminae being broken away to show others.

' Referring now more specifically to the drawings I show a plastic structure comprising a plurality of laminae the same being'made into the form of a globe and used in connection with electric lights or the like.

Of the laminae the innermost layer 10 is relatively thin and of adistinct tint such as layer.

blue', though being of so thin a nature and the color being so relatively mild the struc- I ture is not materially altered in its appearance-because of the colored layer, except as the light 1s modified by it in passing through it" as will more fully appear hereinafter.

The oute'rmostlayer 11 is clear and color -less and is materially thicker than the inapproximately tlie same thickness as the outermost layer 11.

A piece of glassware made in accordance -with this invention possesses phenomenal strength because the strength of an article of plasticmaterial or the like depends upon the extent of its surface. In the making of this glass in which there are three layers united to one another-there is in' effect a condition involving three times as many surfaces as if a single ply or layer of glass were present. The molten glass from which the several laminae are formed is assem bled by the blower dipping first his blowpipe into the blue glass then into the opal and then into the clear glass. By the exer-' cise of skill and experience he gathers the proper proportions of the different species of glass upon the end of his blow-pipe forming a solid mass of blue, white, and

clear respectively. He-then' blows through the pipe for the purpose of enlarging or expanding the mass and finally plunges it into a suitable mold for the purpose of giving, the mass the proper shape. The several layers or laminae are thus spread evenly throughout the configuration. The several laminae though united each to each firmly do not blend or mix with one another. y i

In the practice of this invention I do not wish to be limited to any particular tints or colors of the glass comprising the several laminae but for the purposes set forth I employ blue forthe innermost layer and neutral characters for the others. The blue layer filters out from the-light givenoff by the electric light the excess-red and yellow rays whereby there is produced a most satisfactory approximation of artificial day light due to the combination of the thin blue layer and the thicker opal or neutral The clear layer on the outside af-,

2. The herein described article of glass ware in the form of a hollow globe Whose,

shell is composed of a plurality of laminae the innermost of which is of a distinctive color, the outermost of which is clear, While the intermediate layer is'of a translucent nature With a neutral tint.

3. The herein described article of glassware composed of a plurality of lamimc, the innermost of Whichis relatively thin and of a bluish color, the outermost of 20 which is clear, and the intermediate layer of which 1s of a translucent nature.

MARSHALL W. GLEASON. 

